哈拉阿拉特山地区构造特征及成因机制模拟  

Tectonic Characteristics and Genetic Simulation of Hala'alate Mountain Area

作　　者：薛雁[1,2] 林会喜[1] 张奎华[1] 聂文龙[3] XUE Yan LIN Huixi ZHANG Kuihua NIE Wenlong(l. Research Institute of Petroleum Exploration ＆ Development, Shengli Oilfield Company, SINOPEC, Dongying 257015, Shandong, China Post-doctoral Research Station, Shengli Oilfield Company, SINOPEC, Dongying 257000, Shandong, China Research Institute of Petroleum Engineering, Shengli Oilfield Company, SINOPEC, Dongying 257000, Shandong, China)

机构地区：[1]中国石化胜利油田分公司勘探开发研究院,山东东营257015 [2]中国石化胜利石油管理局博士后科研工作站,山东东营257000 [3]中国石化胜利油田分公司石油工程技术研究院,山东东营257000

出　　处：《大地构造与成矿学》2017年第5期843-852,共10页Geotectonica et Metallogenia

基　　金：国家科技重大专项课题"准噶尔盆地碎屑岩层系大中型油气田形成规律与勘探方向"(2011ZX05002-002);中国石化科技重大攻关课题"哈山构造带成藏主控因素研究"(P13020);胜利油田分公司博士后科研课题"哈山构造带形成演化及成因机制"(YKB1415)联合资助

摘　　要：哈拉阿拉特山地区是准噶尔盆地西北缘山前冲断带的一部分,构造变形复杂。为研究哈山地区的构造变形过程及成因机制,在三维地震资料解释的基础上,根据构造变形样式的差异,划分为西、中、东三段。西段构造变形整体以推覆叠加为主,中段整体表现为冲断叠加的特征,东段主要表现为冲断褶皱的模式。构造变形过程主要经历了早二叠世伸展裂陷、中晚二叠世-三叠纪强烈逆冲推覆、侏罗纪-白垩纪弱挤压逆冲和新生代隆升兼走滑调整四个阶段。采用物理模拟手段对哈山地区不同区段典型剖面的构造变形过程进行了实验研究。结果表明,挤压速率和强度是决定哈山地区不同区段地层叠置程度的主要因素,塑性地层的分布控制了不同区段滑脱断层与冲断断层发育的先后顺序,而塑性地层的长度则决定了滑脱断层的规模。The Hala＇alate mountain area is part of the mountain front thrust belt in the northwest margin of Junggar Basin, where the tectonic deformation is complicated. Based on interpretation of the three-dimensional seismic data, it can be divided into three segments. The structure of the Hala＇alate mountain area is characterized by nappe-superimposed deformation in the western part, trust-superimposed deformation in the middle part, and trust-fold deformation in the eastern part. Tectonic evolution consists of three stages： extension-rifted stage （P1）, strong thrust-nappe stage （P2-T）, weak compressional-thrust stage （J-K）, uplifting erosion and strike-slip adjustment stage （Cz）. To better understand the structural genetic mechanism, typical profiles of different segments in the study area were chosen to simulate the structural deformation processes. The experimental results show that the compress velocity and strength are the main controlling factors of strata and superposed extent. The location of ductile formations controlled the development sequence of the detachment fault and the thrust fault in different segments. The length of ductile formations controlled the scale of the detachment fault.

关 键 词：哈山地区 冲断带 构造变形 物理模拟 主控因素 

分 类 号：TE121.2[石油与天然气工程—油气勘探] P542[天文地球—构造地质学]